cannam@64: #ifndef KISS_FTR_H
cannam@64: #define KISS_FTR_H
cannam@64: 
cannam@64: #include "kiss_fft.h"
cannam@64: #ifdef __cplusplus
cannam@64: extern "C" {
cannam@64: #endif
cannam@64: 
cannam@64:     
cannam@64: /* 
cannam@64:  
cannam@64:  Real optimized version can save about 45% cpu time vs. complex fft of a real seq.
cannam@64: 
cannam@64:  
cannam@64:  
cannam@64:  */
cannam@64: 
cannam@64: typedef struct kiss_fftr_state *kiss_fftr_cfg;
cannam@64: 
cannam@64: 
cannam@64: kiss_fftr_cfg kiss_fftr_alloc(int nfft,int inverse_fft,void * mem, size_t * lenmem);
cannam@64: /*
cannam@64:  nfft must be even
cannam@64: 
cannam@64:  If you don't care to allocate space, use mem = lenmem = NULL 
cannam@64: */
cannam@64: 
cannam@64: 
cannam@64: void kiss_fftr(kiss_fftr_cfg cfg,const kiss_fft_scalar *timedata,kiss_fft_cpx *freqdata);
cannam@64: /*
cannam@64:  input timedata has nfft scalar points
cannam@64:  output freqdata has nfft/2+1 complex points
cannam@64: */
cannam@64: 
cannam@64: void kiss_fftri(kiss_fftr_cfg cfg,const kiss_fft_cpx *freqdata,kiss_fft_scalar *timedata);
cannam@64: /*
cannam@64:  input freqdata has  nfft/2+1 complex points
cannam@64:  output timedata has nfft scalar points
cannam@64: */
cannam@64: 
cannam@64: #define kiss_fftr_free free
cannam@64: 
cannam@64: #ifdef __cplusplus
cannam@64: }
cannam@64: #endif
cannam@64: #endif